Calling CodeIgniter get_instance in Wordpress causes 404 - php

Question

I've been working for the past day or so on getting Wordpress the play nicely with Codeigniter. I have a parent application written in Codeigniter that I'm trying to use to control access to a Wordpress install.
I've had okay luck so far with getting a Codeigniter instance (via get_instance()) to show up and made the necessary modifications to get the two applications to stay out of each other's way for the most part.
However, I'm up against a wall now with regard to anything past the root index.php of the Wordpress site.
URL's look like /parent/content/external/wordpress where "parent" is the Codeigniter root folder and wordpress is the Wordpress root folder.
I can load up example.com/parent/content/external/wordpress (with or without index.php) but anything like wordpress/sample-page results in a Codeigniter 404 error.
It seems like Codeigniter is trying to resolve the URL to a controller and method, but failing. I am getting 404 errors in my CI logs that point to the first segment of the Wordpress url (sample-page in the example above).
Does anybody know how I might get CI to stop trying to resolve when loaded via the code that was shoved into the Wordpress index.php file?
Contents of that file pasted below. Thank you!
<?php
// BEGIN: CodeIgniter setup
// Remove the query string
$_SERVER['QUERY_STRING'] = '';
// Include the codeigniter framework
define("REQUEST", "external");
require('/home/magicmag/magicmagazine.com/x/index.php');
// Create CI instance
$CI =& get_instance();
// Authenticate user with custom redirect
$CI->user = $CI->xlib->isLoggedIn(FALSE);
// Custom redirect
if(!$CI->user) {
redirect('/user/login?d=/content/ext/magic-live-2015');
}
#ToDo: Rewrite this so that the destination is determined by current URL or by the starting URL of the external content
// Check for existing auth
if(!isset($CI->user['ext-magic-live-2015'])) {
// User isn't currently authenitcated to the external content
// Try to authentical
$CI->user['ext-magic-live-2015'] = $CI->xlib->hasExtAccess($CI->user['userId'], '1'); // MAGIC Live is extId 1
// If authenticated
if($CI->user['ext-magic-live-2015']) {
// Store it in the session
$CI->session->set_userdata('ext-magic-live-2015', $CI->user['ext-magic-live-2015']); #ToDo fix hardcoded name
} else {
// Not authenticated
$CI->session->set_flashdata('danger', 'You do not have access to that content.');
redirect('/');
}
}
// END: CodeIgniter setup
// UNEDITED WORDPRESS INDEX.PHP IS BELOW
/**
* Front to the WordPress application. This file doesn't do anything, but loads
* wp-blog-header.php which does and tells WordPress to load the theme.
*
* #package WordPress
*/
/**
* Tells WordPress to load the WordPress theme and output it.
*
* #var bool
*/
define('WP_USE_THEMES', true);
/** Loads the WordPress Environment and Template */
require( dirname( __FILE__ ) . '/wp-blog-header.php' );
And here is the Codeigniter .htaccess file:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /x/
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#When your application folder isn't in the system folder
#This snippet prevents user access to the application folder
#Submitted by: Fabdrol
#Rename 'application' to your applications folder name.
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to see if the user is attempting to access a valid file,
#such as an image or css document, if this isn't true it sends the
#request to index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
# Submitted by: ElliotHaughin
ErrorDocument 404 /index.php
</IfModule>

Answer 1

ok your .htaccess does not allow accessing the word press directory and will trigger any URI_REQUEST to codeigniter index.php
so in order to allow access to the wp directory add a new condition + rule like so
#allow access to wp directory
RewriteCond %{REQUEST_URI} ^parent/content/external/wordpress.*
RewriteRule ^(.*)$ /$1 [L]
so your .htaccess will look like this
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /x/
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#When your application folder isn't in the system folder
#This snippet prevents user access to the application folder
#Submitted by: Fabdrol
#Rename 'application' to your applications folder name.
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to see if the user is attempting to access a valid file,
#such as an image or css document, if this isn't true it sends the
#request to index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
#allow access to wp directory
RewriteCond %{REQUEST_URI} ^parent/content/external/wordpress.*
RewriteRule ^(.*)$ /$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
# Submitted by: ElliotHaughin
ErrorDocument 404 /index.php
</IfModule>
you can test this .htaccess here http://htaccess.madewithlove.be/
when you request
for example, parent/content/external/wordpress/11/22/33
you will be redirected to wp without being 'caught' by ci index.php
if it still doesn't work just play with the line
RewriteCond %{REQUEST_URI} ^parent/content/external/wordpress.*
a little bit
hope that helps